Syringe



(NoMoael.) l 5 I'. T. VAN WOERT.

SYRINGB.Y

No. 455,371. Patented July 7, 1891.

K hda ATTORNEYS me Nonms News co., moroin'um, wasmna'mn. D. c.

UNITED STATES PATENT OFFICE.

FRANK T. VAN VOERT, OF BROOKLYN, NEV YORK.

SYRINGE.

SPECIFICATION forming part of Letters Patent No. 455,371, dated J' uly7, 1891.

Application iiled November 13, 1890. Serial No. 371,313. (No model.)

To all whom it may concern.-

Be it known that I, FRANK T. VAN VOERT, a citizen `of the United States,residing at Brooklyn, in the county ot' Kings and State 5 of New York,have invented new and useful Improvements in Syringes, of which thefollowing is a specification.

This invention relates to a syringe composed of an elastic bulb, anozzle extending from said bulb, a valve for closing the nozzle, a spoutextending laterally from the nozzle between the valve-seat and the bulb,and a rod extending from the valve through the nozzle into the bulb, aspointed out in the following specification and claim, and illustrated inthe accompanying drawings, in which- Figure l represents a section sideView showing the syringe in position to be charged. Fig. 2 is alongitudinal central section of the syringe when charged. Fig. 3 is a'similar view of a modification.

In the drawings, the letter A designates a hollow elastic bulb, fromwhich extends the nozzle B. VThis nozzle is firmly secured in the bulb,and it is made of metal, hard rubber, or any other suitable rigidmaterial.

C is a valve for closing the nozzle, said nozzle being provided with avalve-seat c, and from the side of the nozzle extends a spout D. Thisspout is situated between the valve-seat and the bulb. From the valve Cextends a rod E, through the nozzle into the bulb, so that when the bulbis compressed in one direction (see Fig. l) the valve is-forced awayfrom its seat and the syringe can be charged with liquid, and when thebulb is compressed -in another direction the liquid contained in thebulb and in the nozzle is driven out through the spout D.

In the example represented in Figs/l and 2 of the drawings thevalve-rodl E extends through the bulb and is secured to the same bymeans of a nut e; and if the mouth of the nozzle is immersed into aliquid and the bulb is compressed, as shown in Fig. l, the valve isopened, and by releasing the bulb a portion of the liquid is suckedintothe syringe, so that on moving said syringe from the liquid it ischarged, as shown in Fig. 2. If thel bulb is now compressed in adirection at-right angles to the valve-rod, the liquid contained in thesyringe is driven out through the spout D.

Instead ot extending the valve-rod through the bulb,'as shown in Figs. land 2, said valverod may be provided with arms f f, Fig. 3, which arepivoted to said rod and provided with tappet-plates g g, which areheldin contact with the sides of the bulb by a spring 71..

vIn this case the bulb must be compressed in a direction at right anglesto the valve-rod for charging and in the direction of the valve-rod fordischarging.

My syringe is intended particularly for dental use when it becomesdesirableto inject a stream of liquid into a hollow tooth or into thecavity left after a tooth has been extracted; but it can be used forvarious surgical operations, such, for instance, as hypodermicinjections, and it can also be used as a dropper.

What I claim as new, and desire to secure by Letters Patent, is-

In a syringe, the combination, with the elastic bulb and with itsnozzle, of a valve for closing't-he nozzle, a spout extending from thenozzle between the Valve-seat and the bulb, a rod extending from thevalve into the bulb,

and means, substantially as described, for retaining the Valve-rod incontact with the bulb.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

FRANK T. VAN' VVOERT.

WVitnesses:

WM. C. HAUFE, W. HAUFE.

